Austrodapus, Menard & Schuh, 2011

Menard, Katrina L. & Schuh, Randall T., 2011, Revision Of Leucophoropterini: Diagnoses, Key To Genera, Redescription Of The Australian Fauna, And Descriptions Of New Indo-Pacific Genera And Species (Insecta: Hemiptera: Miridae), Bulletin of the American Museum of Natural History 2011 (361), pp. 1-159 : 71-73

Austrodapus , new genus Figures 11–12 , 44L–O ; plate 4

TYPE SPECIES: Austrodapus nitens , new species.

DIAGNOSIS: Recognized by large size, castaneous to dark brown coloration; distinctly shiny head, pronotum, and scutellum, flat pronotal collar, swollen posterior lobe of pronotum convexly rounded and with narrow lateral margins in anterior lobe, eyes exserted from anterior margin of pronotum, long interocular setae, long erect golden setae on metatibiae, punctate hemelytron with both long erect simple setae and short golden sericeous setae but without reflective patches, transversely rounded hemelytral margins weakly constricted medially, tubercules on posteroventral margin of pygophore, and form of male genitalia.

DESCRIPTION: Male: Macropterous, large, medially constricted. Total length 3.07–3.27, width pronotum 1.06–1.11, maximum width across hemelytra 1.04–1.06. COLORATION: Castaneous to chocolate brown. Head: Brown, castaneous to golden. Eyes deep red to dark purple. Labium pale brown. Antennal segment 1 golden, segment 2 completely dark brown, segment 3 golden basally dark distally, segment 4 brown. Thorax: Pronotum, scutellum, and thorax dark brown to castaneous. Dorsolateral margin of metepisternum and scent gland unicolorous with thoracic pleura. Legs: Procoxae reddish brown, mesocoxae golden with brown margin adjacent to thorax basally, metacoxae completely golden. All femora castaneous to brown, all tibiae basally dark brown to castaneous, distally golden, with metatibiae with parallel rows of dark spicules and long, obvious golden setae. Basal tarsomeres golden, distally dark brown. Hemelytra: Primarily castaneous to dark brown with white partial fascia occupying median of posterior half of clavus and posterior to apex of scutellum (pl. 4), lateral margins anterior to cuneus sometimes with reddish tinge. Anterior margin of cuneus white with yellowish tinge at lateral margins, occupying nearly M total area of cuneus, posterior dark brown or castaneous like corium. Membrane pale brown with darker brown patches along posterolateral margins, brown-colored veins. Abdomen: Brown to castaneous, darker in than rest of insect. SURFACE AND VESTITURE: Dorsal surface of body and eyes covered with long erect pale brown setae. Head, pronotum and scutellum distinctly shiny. Hemelytron punctate, also covered with long erect pale brown setae but also includes short golden sericeous setae covering majority of surface, lacking reflective patches. STRUCTURE: Head: Clypeus exserted, surpassing anterior margin of frons and visible in dorsal view. Vertex convex and declining along posterior margin, width nearly equal to two times width of one eye, visible in lateral view. Dorsal surface of eyes weakly removed from vertex, height greater than 1.5 total height of head, approximately J of total height of head below eyes, posterior margin of eyes parallel to anterior margin of pronotum. Antennal segment 1 inverted-coke-bottle shaped, length surpassing apex of head; segment 2 long and equal to in diameter or wider than segment 1, increasing in diameter distally toward segment 3. Length of antennal segment 2 equal to one nearly 1.33 times head width. Antennal segments 3 and 4 slender and less than half length of segment 2. Apex labial segment 1 subapical to posterior margin of head, apex of segment 4 reaching apex of mesocoxa. Thorax: Pronotum more than 1.5 times as wide as long. Flat, narrow pronotal collar. Mesoscutum exposed, scutellum weakly transversely rounded. Scent gland approximately M total area of metepimeron. Legs: Moderate length, slender with metafemora widening in diameter subapically with joint to metatibiae, kneelike shape. Claws moderate length and width, pulvilli small and less than half of claw length. Parempodia parallel and setiform. Hemelytra: Lateral margins nearly parallel sided, dorsally transversely rounded. Cuneus triangular, length approximately equal to M total length of hemelytral membrane, cuneal fracture angled anteromesially, lateral and anterior margin of cuneus occupied by white thickened. Abdomen: Narrow, elongate, parallel sided, abdominal sternite 1 wider than long. GENITALIA (fig. 12): Pygophore: One-fourth total length of abdomen. Endosoma: Large, slender, twisted, S-shaped, composed of two sclerotized straps, fused into tube toward base and separating toward apex, unified by membrane that forms fanlike extension near apex, margin terminating below base of secondary gonopore. Secondary gonopore small, weakly sclerotized or horse-collar shaped, located at apex (fig. 12A). Phallotheca: Large, C-shaped, apex gently tapering toward point (fig. 12C). Right Paramere: Moderately sized, smaller than left paramere, narrow at apex and widening subapically, with tapering, pointed apex (fig. 12D). Left Paramere: Moderately sized; posterior process slender, with spicules, and nearly straight for its length with dorsal margin folded over ventrally; posterior process relatively elongate compared to anterior process; anterior process stout but without spicules on interior margin, apex directed ventrally. Main area of body between anterior and posterior processes rounded (fig. 12B).

Female: Macropterous, medium sized, medially constricted. Total length 3.07–3.32, width pronotum 1.08–1.14, maximum width across hemelytra 1.14–1.19. COLORATION: Similar patterning as in male, with abdomen completely dark brown in contrast to castaneous thorax and head. SURFACE TEX- TURE AND VESTITURE: As in male. STRUCTURE: Clypeus produced, strongly exserted in dorsal view. Vertex convex, width greater than two times width of one eye. Eyes greater than half total height of head in lateral view, dorsal surface of eyes continuous with dorsum of vertex. Abdomen parallel sided, anterior half posterior from thorax gently declining ventrally, posterior half of abdomen convex and curving apically to dorsal surface of abdomen. Spine present on ventral surface of ovipositor. GENITA- LIA (fig. 44L–O): Two separate, triangularshaped vestibular sclerotized plates, lateral tube not apparent, but vulva covered by T-shaped apical sclerite (fig. 44N). Lateral margins of first gonapophyses sclerotized between dorsal and ventral labiate plates; sclerotized rings weakly sclerotized (fig. 44O). Posterior wall mostly membranous, with posterior margin sclerotized across margin with flat surface (fig. 44L), and lateral region of interramal sclerites sclerotized (fig. 44M).

ETYMOLOGY: A name proposed by J.C.M. Carvalho for two of the examined specimens but never published; masculine.

HOSTS: Fabaceae , primarily Acacia spp.

DISTRIBUTION: New South Wales.

DISCUSSION: The endosoma of Austrodapus looks very similar to the endosoma of Abuyogocoris ( Schuh 1984: figs. 659, 662) with a membrane that extends dorsally along the apical half of the endosoma and ending subapically, which may be homologous to a fanlike structure illustrated in Schuh (1984). We were not able to reexamine the male genitalia of Abuyogocoris . However, the differences in the structure of the left paramere, the presence of the sericeous setae on the hemelytron, and the overall larger size indicate Abuyogocoris and Austrodapus are different genera.

Figures

Figure 11. Distribution map of Austrodapus nitens (southeastern Australia).

Figure 12. Male genitalia of Austrodapus nitens (A–D).

Figure 44. Female genitalia of Aitkenia exocarpos (A–D), Arafuramiris queenslandensis (E–G), Ausejanus albisignatus (H–K), Austrodapus nitens (L–O), Blesingia gularis (P–Q), Collessicoris bellissimus (R–S), and Leucophoroptera quadrimaculata (T–U). Ls5 lateral reduced interramal sclerites; PM–PW5 posterior margin sclerite on the posterior wall; Osp5 ovipositor spine; SR5 sclerotized rings; As 5 anterior sclerite of first gonapophysis; Vg 5 vestibular sclerite of first gonapophysis.